Retaining Effective Teachers Policy
The state should give local districts authority over pay scales.
Iowa gives local districts the authority for pay scales, eliminating barriers such as state salary schedules and other regulations that control how districts pay teachers. The state mandates a minimum salary but allows districts to determine the remainder of the schedule.
Iowa Code 294A.5
While still leaving districts the flexibility to establish their own pay scale, Iowa should articulate policies that definitively discourage districts from tying compensation to advanced degrees, in light of the extensive research showing that such degrees do not have an impact on teacher effectiveness.
Similarly, Iowa should articulate policies that discourage districts from determining the highest steps on the pay scale solely by seniority.
Iowa recognized the factual accuracy of this analysis.
Compensation reform can be accomplished within the context of local control.
Teacher pay is, and should be, largely a local issue. Districts should not face state-imposed regulatory obstacles that prevent them from paying their teachers as they see fit; different communities have different resources, needs and priorities. States should remove any barriers to districts' autonomy in deciding the terms for teacher compensation packages.
The state can ensure that all teachers are treated fairly by determining a minimum starting salary for all teachers. However, a state-mandated salary schedule that locks in pay increases or requires uniform pay deprives districts of the ability to be flexible and responsive to supply-and-demand problems that may occur.
While leaving districts flexibility to decide their own pay scales, states should discourage districts from basing pay solely on criteria not correlated with teacher effectiveness.
Across the country, state and district salary schedules are based primarily on just two criteria: advanced degrees and years of experience, neither of which is correlated with teacher effectiveness. As discussed in the rationale for Goal 3-E, the impact of advanced degrees on teacher performance has been studied extensively, and research has shown that such degrees generally do not make teachers more effective. Years of experience do have an impact on teacher effectiveness very early in a teacher's career, but this effect is gone after the first few years of teaching. Because of their predominance in current salary schedules, states need to take a proactive role in preventing districts from basing teacher pay primarily on these two criteria.
Pay Scales: Supporting Research
For evidence that degree status does not increase teacher effectiveness and should therefore not be automatically rewarded in teacher salary schedules, see the following:
C. Clotfelter, H. Ladd and J. Vigdor, "How and Why do Teacher Credentials Matter for Student Achievement?", NBER, Working Paper No. 12828, January 2007; S. Rivkin, E. Hanushek, and J. Kain, "Teachers, Schools, and Academic Achievement." Econometrica, Volume 73, No. 2, March 2005, pp. 417-458; R. Ehrenberg and D. Brewer, "Do School and Teacher Characteristics Matter? Evidence from High School and Beyond," Economics of Education Review, Volume 13, No. 1, March 1994; pp. 1-17. (Ehrenberg and Brewer found that an increase in the percentage of teachers with master's degrees was associated with lower gains among white students but higher gains among black students.); R. Murnane, The Impact of School Resources on the Learning of Inner City Children, 1975, Balinger Publishing Company, Cambridge, MA; H. Kiesling, "Assignment Practices and the Relationship of Instructional Time to the Reading Performance of Elementary School Children," Economics of Education Review, 1984, Volume 3, No. 4, pp. 341-50. B. Rowan, R. Correnti, and R. Miller, "What Large-scale, Survey Research Tells Us About the Teacher Effects on Student Achievement: Insights from the Prospects Study of Elementary Schools," Teachers College Record, Volume 104, No. 8, November 8, 2002 pp. 1525-1567. R. Ferguson, "Paying for Public Education: New Evidence on How and Why Money Matters," Harvard Journal on Legislation, Volume 28, Summer 1991, pp. 465-498. D. Goldhaber and D. Brewer, "Evaluating the Effect of Teacher Degree Level on Educational Performance," Developments in School Finance, ed. W. Fowler, U.S. Department of Education, National Center for Education Statistics, 1996, pp. 199-210.
For data on the high cost of salary differentials based on advanced degrees, see M. Roza and R. Miller, July 20, 2009, "Separation of Degrees", Center for American Progress. http://www.americanprogress.org/wp-content/uploads/issues/2009/07/pdf/masters_degrees.pdf.
For evidence that experience does not directly correlate with teacher effectiveness, and therefore should not be the sole determinate of the highest steps on a pay scale, see the following:
J. King Rice "The Impact of Teacher Experience: Examining the Evidence and Policy Implications." Calder Institute, August 2010, Brief 11; S. Rivkin, E. Hanushek, and J. Kain, "Teachers, Schools, and Academic Achievement." Econometrica, Volume 73, No. 2, March 2005, pp. 417-458; C. Clotfelter, H. Ladd, and J. Vigdor, "How and Why Do Teacher Credentials Matter for Student Achievement?" NBER, Working Paper No. 12828, January 2007; S. Kukla-Acevedo, "Do Teacher Characteristics Matter? New Results on the Effects of Teacher Preparation on Student Achievement." Economics of Education Review, Volume 28, 2009, pp. 49-57; E. Hanushek and S. Rivkin, "How to Improve the Supply of High Quality Teachers." 2004, Brookings Institute: Brookings Papers on Education Policy, pp. 7-44.
For information about alternative compensation for teachers, see the following:
Teaching Commission and USC California Policy Institute, "Understanding Alternative Teacher Compensation," USC California Policy Institute, 2005; J. Azordegan, P. Byrnett, K. Campbell, J. Greenman, and T. Coulter, "Diversifying Teacher Compensation", The Teaching Commission and Education Commission of the States," ECS, December 2005; Minnesota Department of Education, "Q Comp: Quality Compensation for Teachers", February 2009.