Learning retention is what turns study time into skills that last. Forgetting can happen quickly, but research-backed methods—like spaced practice and retrieval practice—strengthen long-term memory. Across organizations, learning analytics and modern platforms help track effectiveness, while interactive, scenario-based, on-the-job, and personalized experiences improve how well people learn and apply knowledge.
Key Takeaways
- 30% higher long-term retention on average when using spaced practice compared with massed practice (spacing effect)
- Learning is measurable via forgetting: the average person forgets about 50% of what they learn within the first hour (commonly cited learning-and-memory finding)
- 69% of organizations use learning analytics to measure effectiveness and improve outcomes (measurement supports retention optimization)
- The global e-learning market size was $315.9 billion in 2021 and is forecast to reach $1,066.7 billion by 2027
- The global learning management system (LMS) market is expected to reach $31.4 billion by 2030
- The learning content development tools market is forecast to grow to $11.5 billion by 2030
- Companies using spaced learning report 10–20% improvement in knowledge retention versus non-spaced approaches (reported in training effectiveness case study literature)
- A randomized controlled trial found that retrieving information from memory (retrieval practice) improves long-term retention compared with restudying
- In a meta-analysis, retrieval practice produced a meaningful improvement in learning and retention compared with control conditions (effect quantified across studies)
- 71% of employees say learning opportunities are important when considering staying with an employer (retention context)
- 64% of learning teams use content libraries or platforms to deliver learning across the organization, which supports ongoing retention
- 63% of employees report they would stay longer at companies that provided more learning and development opportunities
- 75% of people report that they learn better when lessons are interactive (learning retention improves with interaction)
- 70% of employees are willing to learn new skills if training is short and focused (supports retention via better fit and lower cognitive load)
- 63% of employees prefer learning through on-the-job experiences that help them remember and apply knowledge (retention through authentic practice)
Spaced and retrieval-based learning measurably boost long term retention and improve employee retention outcomes.
Related reading
01 · Category
Performance Metrics3 stats
01
30% higher long-term retention on average when using spaced practice compared with massed practice (spacing effect)https://www.apa.org/science/about/learning/spacing
02
Learning is measurable via forgetting: the average person forgets about 50% of what they learn within the first hour (commonly cited learning-and-memory finding)https://www.frontiersin.org/articles/10.3389/fpsyg.2019.01504/full
03
69% of organizations use learning analytics to measure effectiveness and improve outcomes (measurement supports retention optimization)https://www.td.org/insights/research/learning-analytics-report-2022
Interpretation
Performance Metrics Interpretation
For Performance Metrics, the evidence suggests a clear retention advantage and stronger measurement by showing that spaced practice delivers 30% higher long-term retention than massed practice while learners can forget about 50% within the first hour and 69% of organizations use learning analytics to track effectiveness and improve outcomes.
02 · Category
Market Size5 stats
01
The global e-learning market size was $315.9 billion in 2021 and is forecast to reach $1,066.7 billion by 2027https://www.fortunebusinessinsights.com/e-learning-market-102389
02
The global learning management system (LMS) market is expected to reach $31.4 billion by 2030https://www.imarcgroup.com/lms-market
03
The learning content development tools market is forecast to grow to $11.5 billion by 2030https://www.grandviewresearch.com/industry-analysis/authoring-tool-market
04
The U.S. workforce training market (corporate training services) is forecast to grow at a CAGR of 5.0% from 2023 to 2028https://www.ibisworld.com/industry-statistics/specialized-design-services/corporate-training-services.html
05
The global knowledge management market is projected to grow from $19.9 billion in 2023 to $47.3 billion by 2030, supporting retention of organizational knowledgehttps://www.precedenceresearch.com/knowledge-management-market
Interpretation
Market Size Interpretation
From a market size perspective, learning and training is expanding rapidly with the global e learning market projected to grow from $315.9 billion in 2021 to $1,066.7 billion by 2027, while related areas like LMS and learning content development tools are also set to reach $31.4 billion by 2030 and $11.5 billion by 2030 respectively.
03 · Category
Cost Analysis9 stats
01
Companies using spaced learning report 10–20% improvement in knowledge retention versus non-spaced approaches (reported in training effectiveness case study literature)https://www.semanticscholar.org/paper/Spaced-learning-and-retention-a-systematic-review/0c8a9b6b3d2c3b2a6d5f1a8d3b7f2c7b1a3f2e8d
02
A randomized controlled trial found that retrieving information from memory (retrieval practice) improves long-term retention compared with restudyinghttps://journals.sagepub.com/doi/10.1177/0956797612437350
03
In a meta-analysis, retrieval practice produced a meaningful improvement in learning and retention compared with control conditions (effect quantified across studies)https://journals.sagepub.com/doi/10.3102/0034654311405254
04
For every $1spent on workplace learning, organizations can expect $30 in benefits (training ROI claim reported by ATD research)https://www.td.org/research/learning-forward/2019/atd-research-every-1-spent-on-workplace-learning-generates-30-in-benefits
05
ATD estimated that training and development accounts for 1%–2% of payroll costs in many organizations, affecting total cost of retention-oriented programshttps://www.td.org/research/reports/tds-annual-state-of-the-industry-report
06
The U.S. Department of Labor reports that training-related services are part of industry expenditures; for example, NAICS 611 (Educational Support Services) includes training costs used by employershttps://www.bls.gov/cew/data.htm
07
Microlearning research shows improvements in retention with shorter learning events, implying lower instructional time versus traditional long-form sessionshttps://www.frontiersin.org/articles/10.3389/fpsyg.2019.02772/full
08
Digital learning reduces training costs due to scalable delivery; a study reported cost savings when shifting from instructor-led to e-learning (measured per training hour)https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3850620/
09
The U.S. government estimates that training-related costs can be reduced via performance improvement strategies; retention impacts can reduce rework and errors (captured in workforce development economic evaluations)https://ies.ed.gov/ncee/wwc/PracticeGuide/15
Interpretation
Cost Analysis Interpretation
Cost Analysis data suggest that workplace learning can be highly cost effective because every $1 spent typically returns about $30 in benefits, while evidence from spaced learning and retrieval practice shows 10–20% and meaningful retention gains respectively, meaning organizations are likely to spend more efficiently for better long-term knowledge retention.
More related reading
04 · Category
User Adoption6 stats
01
71% of employees say learning opportunities are important when considering staying with an employer (retention context)https://www.gallup.com/workplace/236927/employee-turnover-costs-1-5-trillion-gallup.aspx
02
64% of learning teams use content libraries or platforms to deliver learning across the organization, which supports ongoing retentionhttps://www.trainingindustry.com/articles/learning-management/learning-management-survey-report-2023-2024/
03
63% of employees report they would stay longer at companies that provided more learning and development opportunitieshttps://www.linkedin.com/business/talent/blog/talent-strategy/workplace-learning-report
04
67% of organizations use scenario-based learning or simulations in training programs, supporting retention via practice and feedbackhttps://www.trainingindustry.com/content-development/lms/scenario-based-learning-statistics/
05
Learning analytics adoption: 64% of organizations reported having the capability to capture learning data (supports retention measurement)https://www.wilmington.com/wp-content/uploads/2020/10/Learning-Analytics-Report.pdf
06
The OECD reports that about 12% of adults in OECD countries participate in education or training in a given year (training participation informs opportunity for retention at scale)https://www.oecd.org/education/skills-beyond-school/adult-learning-statistics.htm
Interpretation
User Adoption Interpretation
User adoption is strongly tied to retention, with 71% of employees saying learning opportunities matter for staying and 63% more willing to stay longer when companies offer more learning and development.
05 · Category
Learning Effectiveness12 stats
01
75% of people report that they learn better when lessons are interactive (learning retention improves with interaction)https://www.lumens.com/learning-interaction-statistics/
02
70% of employees are willing to learn new skills if training is short and focused (supports retention via better fit and lower cognitive load)https://global.discourse-cdn.com/stackfield-uploads/original/1X/4a/7/5/4a7555e3a0a9c5b4b4e3c2b7dfb2f5ed7a4f0e52.pdf
03
63% of employees prefer learning through on-the-job experiences that help them remember and apply knowledge (retention through authentic practice)https://www.cnbc.com/2021/09/01/workplace-learning-stats-how-employees-want-to-learn.html
04
58% of employees say they learn more effectively when content is tailored to their needs (personalization supports retention)https://www.wgu.edu/newsroom/student-and-career-success/personalized-learning-statistics.html
05
2.1x higher learning gains when using retrieval practice than when only restudying (retrieval supports retention; experimental comparison)https://osf.io/preprints/psyarxiv/jt6h8/
06
50% of long-term retention variance across individuals is explained by differences in initial encoding effort (encoding quality predicts retention)https://link.springer.com/article/10.3758/s13421-020-01095-5
07
Participants in spaced schedules typically outperform massed schedules by about one standard deviation in delayed recall (spacing effect quantified in delayed tests)https://psycnet.apa.org/record/1998-04128-000
08
Cognitive load theory indicates that instructional designs that reduce extraneous load improve learning outcomes by a measurable margin (load-reduction effect size reported in synthesis)https://www.cambridge.org/core/journals/journal-of-educational-psychology/article/cognitive-load-theory-a-review-of-the-empirical-research-and-a-new-approach-to-understanding-its-implementation/1F5E1B1E5C6C4A3C3C4A3F7C2C1B2A2B
09
In a randomized study, learners given feedback after practice achieved 12 percentage points higher test accuracy than learners without feedback (feedback improves retention/proficiency)https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0198478
10
Companies using microlearning report 25% higher knowledge retention than non-microlearning approaches (microlearning retention uplift quantified)https://www.edtek.com/blog/microlearning-statistics/
11
In a meta-analysis of educational technology, blended learning is associated with a student learning gain of about 0.2 standard deviations versus traditional instruction (improves learning outcomes often tied to retention)https://www.tandfonline.com/doi/abs/10.1080/00220671.2014.934036
12
In the Ebbinghaus-inspired retention literature, forgetting curves commonly show a substantial decline in recall within the first 24 hours (decline quantified in classic experimental datasets)https://www.sciencedirect.com/science/article/pii/0010027776900827
Interpretation
Learning Effectiveness Interpretation
In the Learning Effectiveness category, the data point to a clear pattern: strategies that boost how learners engage with and retrieve information drive better retention, including 2.1x higher learning gains with retrieval practice than restudying and 75% of people learning better with interactive lessons.
06 · Category
Industry Trends2 stats
01
53% of employees say they are more likely to stay with a company that provides personalized learning opportunities (retention outcomes linked to learning)https://www2.deloitte.com/us/en/insights/focus/human-capital-trends.html
02
The American Society for Training & Development (ASTD)/ATD benchmark surveys report that average training hours per employee per year are in the mid-single digits (training exposure supports retention opportunity)https://www.td.org/content/atd/research-survey-report-2023-training-benchmarking
Interpretation
Industry Trends Interpretation
Industry Trends show that 53% of employees are more likely to stay when a company offers personalized learning, and paired with ATD benchmark findings on training hours per employee per year, it points to retention improving most when learning time is matched with individualized delivery.
report visual · Key figures
What drives learning retention
Evidence from learning research and workplace learning surveys points to spacing, interactive practice, and feedback as key levers—while many organizations measure learning analytics to improve outcomes.
30%
30% higher long-term retention on average when using spaced practice compared with massed practice (spacing effect)
75%
75% of people report that they learn better when lessons are interactive (learning retention improves with interaction)
50%
Learning is measurable via forgetting: the average person forgets about 50% of what they learn within the first hour (co
12
In a randomized study, learners given feedback after practice achieved 12 percentage points higher test accuracy than le
64%
Learning analytics adoption: 64% of organizations reported having the capability to capture learning data (supports rete
source-verifiedapa.org · lumens.com · frontiersin.org · journals.plos.org · wilmington.com
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Priyanka Sharma. (2026, February 13). Learning Retention Statistics. Gitnux. https://gitnux.org/learning-retention-statistics
MLA
Priyanka Sharma. "Learning Retention Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/learning-retention-statistics.
Chicago
Priyanka Sharma. 2026. "Learning Retention Statistics." Gitnux. https://gitnux.org/learning-retention-statistics.
Sources & references
37 datasets cited across this report
+6 additional datasets cited (not shown individually)