Education Flashcards
- Authors of empirical meta-analysis of returns to education
- Time period covered
- High income country average private rate of return to education?
- Psacharopoulous and Patrinos (2018)
- 1950-2014
- 8.2%
Why might class size decisions be endogenous to outcomes (hence can’t run simple regression of the 2)?
- Low ability often put into smaller classes to receive extra support (but this doesn’t mean that small classes cause low achievement)
Most important externality of education?
Tax benefit
Countries in which explicit voucher systems been used?
Chile, Sweden
Leckie and Goldstein (2009)
LEAGUE TABLE DATA = MISLEADING
- Shows performance of kids 3/5 cohorts ahead of new joiners
- E.g. new, effective headteacher may have since joined, not reflected in exam data
Evidence of differing priorities of parents of high/low SES when choosing school for children?
Institute for Government (2012)
- High socioeconomic status parents place most weight on exam results
- Low socioeconomic status parents place greater weight on probability of admission and travel distance
What do high socioeconomic status parents place most weight on when choosing school for children? (Institute for Government 2012)
Exam results
What do low socioeconomic status parents place most weight on when choosing school for children? (Institute for Government 2012)
- Probability of admission
2. Travel distance
Evidence of importance of peer effects
Rothstein (2006)
Bradley and Taylor (2002)
- Analysed effect of competition on secondary exam performance in 90s
- Increased competition between schools led to significant improvement in exam results
- Size of effect much greater w/larger no. schools within 1km radius
Gibbons, Machin and Silva (2006)
- No association between changes in competition between primary schools and exam performance
2a. Result could be due to focus on primary education
2b. Young kids less independent, so travel distance more important vs educational quality when choosing school
Conclusion of literature review on impact of school vouchers on educational outcomes?
Barrow (2009)
- Most studies report small positive effect on achievement
- Reasonable no. studies not statistically significant
Conclusion of literature review on impact of school competition on educational outcomes?
Belfield and Levin (2002)
- Reasonably consistent positive association
- Size of effects modest
- > 1/3rd estimates not statistically significant
Evidence that design of school voucher schemes important?
Epple et al (2015)
- Initial studies showed no impact of voucher schemes in Chile and NZ
- Much more favourable effects reported following reforms to admissions policy legislation that prevents cream-skimming
Association (pure correlation) between schooling and wages implies an x% increase in wages per year of schooling
10% (Angrist and Pischke)
Explain ability bias in education
- High ability people likely to seek more education
2. These people also have higher wage-earning ability
Different methods for identifying causal effect of education?
- RCT
- Natural experiment
- Instrumental variable
- Conditional independence assumption
Angrist and Krueger (1991)
ESTIMATES RETURN TO SCHOOLING
- IV = quarter of birth
- Minimum schooling defined in terms of age, so those born earlier in year have lower level of minimal schooling
- Estimated return per additional year of schooling = 7.5%
Evaluate quarter of birth as an instrumental variable for schooling (Angrist and Krueger 1991)
- Randomly assigned (not completely though, some aim for September baby)
- Relevant - only influences wages through years of schooling
- Weak instrument - effect is small and there is only variation of a few months
- External validity limited (LATE) – only concerns pupils who leave school at 16/17, a small fraction of people and effect might be different across rest of distribution (e.g. for ‘always-takers’ who continue to university)
Which study used quarter of birth as an instrumental variable for estimating returns to education?
Angrist and Krueger (1991)
Evaluate use of sample of identical twins to control for ability bias and estimate returns to education (Ashenfelter and Rouse 1998)
- Good control for innate ability
- Don’t know why twins differ in schooling (hence don’t know whether thing that influenced education choices also influenced wages)
- Twins more likely in IV births (expensive treatment, so may be associated w/more affluent parents)
- Necessarily small sample size (not may identical twins)
Which study used a sample of identical twins to control for ability bias and estimate returns to education?
Ashenfelter and Rouse (1998)
Evidence of signalling effect in education
- Harmon et al (2004)
A. Wages of educated employees vs self-employed (for whom signalling doesn’t matter)
B. Returns to schooling indicate small signalling effect:
(i) Employees = 6%
(ii) Self-employed = 5%
- Last year of school has particularly high returns
Evidence (meta-analysis) of impact on class size on educational outcomes
Hanushek (2002)
- Little evidence that class size influences outcomes
- 72% studies = statistically insignificant
Efficiency reasons for state financing of education?
- Positive externalities
- Competition (minimum efficient scale for schools/universities and travel/switching costs lead to local monopolies)
- Information (parents/pupils not well-informed about quality)
- Imperfect capital markets (inability to borrow against human capital - no collateral - leads to socially and individually sub-optimal investment in human capital)
Examples of positive externalities of education
- increased tax revenue
- knowledge spillovers (Moretti 2004)
- reduced crime (Machin et al 2011)
- more inventions
- social cohesion/cultural values
- better health (Heckman et al 2016)
Why is investment in early years education more cost effective?
Heckman (2008)
Early investment in skills and education a virtuous cycle, so more cost effective
UK evidence that differences in early child test scores important for achievement later in life
Feinstein (2003)
- Statistically significant relationship between test scores at 22 months and later achievement in life (e.g. probability of doing A-levels)
Evidence that effective early years education generates life-long gains in earnings?
Chetty et al (2011)
- RCT
- Above-average kindergarten teacher generates ~$320,000 more in total earnings vs below-average (for class of 20 students)
- Evidence of impact of high-quality ‘classroom environment’ in early years education?
- Causal mechanism?
Chetty et al (2011)
- High quality classroom includes teacher quality, peer effects, class chemistry (cannot isolate individual factors)
- Random assignment to higher quality classroom:
(i) Important predictor of kindergarten test scores (though effect faded in later school years)
(ii) Strongly related to adult outcomes (e.g. earnings, college attendance, marriage rates etc) - Soft/non-cognitive skills = likely causal mechanism (explains why effect fades in later school years but re-emerges in adulthood)
Why might parents under-invest in education of children?
- Positive externalities – reduced crime, social cohesion etc (private benefit < social benefit due to external benefit)
- (Lack of) altruism – parents may put lower weight on children’s development than social planner
- Imperfect information – parents lack information on importance of investments in education/development and optimal way to invest
- Credit constraints
How can government overcome reasons for parents’ under-investment in children’s education?
- Reduce cost (subsidies)
2. Increase perception of benefits (e.g. some may not know benefits of reading to child every night)
RCT evidence of impact of parenting intervention on young children
Jamaica RCT (Walker et al 2005)
- Weekly home visits over 2 year period for children aged 2-9
- Taught mothers how best to stimulate child
- Significant impact on range of outcomes, even into adulthood (incl. 25% higher wages)
Walker et al (2005) ran an RCT in Jamaica w/weekly home visits over 2 year period for children aged 2-9, which taught mothers how best to stimulate child.
What was impact on wages into adulthood?
25% higher wages
Evidence that children from lower socioeconomic backgrounds receive less investment in their early development?
Hart and Risley (2003)
- Children from lower income households hear up to 30M fewer words before age 3
Reasons for EARLY investment in childhood development?
- Human capital formation:
(i) Psychological literature suggests marginal investment in early childhood has greater impact on development outcomes - Skill dynamics:
(i) Early investments create virtuous cycle