Delivering Well Prepared Teachers Policy
The state should ensure that secondary science teachers know all the subject matter they are licensed to teach.
Illinois requires secondary science teacher candidates to earn a specific subject-area designation (e.g., biology, physics) as part of the broad-field science endorsement. In addition to completing 32 semester hours of coursework, candidates must also pass the state's subject-specific content test. Regrettably, Illinois allows these candidates to teach all areas of science at the general level, regardless of the specific designation. However, to teach honors or AP classes, science teachers must have the designation in that particular area.
Illinois Licensure Testing System www.il.nesinc.com 23 Illinois Administrative Code 25.100
Require secondary science teachers to pass a content test for each discipline they are licensed to teach.
Although Illinois's policy ensures that science teachers who teach upper-level courses possess adequate subject-matter knowledge, it falls short when it comes to general-level courses. A biology teacher, having only passed the state's biology content test, could go on to teach chemistry and physics—just not at the honors or AP level. The state should ensure that all students, not only those in advanced classes, have teachers with sufficient and appropriate content knowledge.
Illinois asserted that in addition to completing 32 semester hours of coursework, candidates must also pass the state's specific content test and complete 12 hours in the designation.
Specialized science teachers are not interchangeable.
Based on their high school science licensure requirements, many states seem to presume that it is all the same to teach anatomy, electrical currents and Newtonian physics. Most states allow teachers to obtain general science or combination licenses across multiple science disciplines, and, in most cases, these teachers need only pass a general knowledge science exam that does not ensure subject-specific content knowledge. This means that a teacher with a background in biology could be fully certified to teach advanced chemistry or physics having passed only a general science test—and perhaps answering most of the chemistry or physics questions incorrectly.
There is no doubt that districts appreciate the flexibility that these broad field licenses offer, especially given the very real shortage of teachers of many science disciplines. But the all-purpose science teacher not only masks but perpetuates the STEM crisis—and does so at the expense of students. States need either to make sure that general science teachers are indeed prepared to teach any of the subjects covered under that license or allow only single subject science certifications. In either case states need to consider strategies to improve the pipeline of science teachers, including the use of technology, distance learning and alternate routes into STEM fields.
Secondary Teacher Preparation in Science: Supporting Research
For an examination of how science teacher preparation positively impacts student achievement, see D. Goldhaber and D. Brewer, "Does Teacher Certification Matter? High School Teacher Certification Status and Student Achievement", Educational Evaluation and Policy Analysis, Volume 22, No. 2, June 20, 2000, pp. 129-145; D. Monk, "Subject area preparation of secondary mathematics and science teachers and student achievement", Economics of Education Review, Volume 13, No. 2, June 1994, pp.125-145; A. Rothman, "Teacher characteristics and student learning". Journal of Research in Science Teaching, Volume 6, No. 4, December 1969, pp. 340-348.
In addition, research studies have demonstrated the positive impact of teacher content knowledge on student achievement. For example, see D. Goldhaber, "Everyone's Doing It, But What Does Teacher Testing Tell Us About Teacher Effectiveness?" Journal of Human Resources,Volume 42, No. 4, Fall 2007, pp. 765-794. See also D. Harris and T. Sass, "Teacher Training, Teacher Quality, and Student Achievement". Calder Institute,March 2007, Working Paper 3. Evidence can also be found in B. White, J. Presely, and K. DeAngelis, "Leveling Up: Narrowing the Teacher Academic Capital Gap in Illinois", Illinois Education Research Council, Policy Research Report: IERC 2008-1, 44 p.; D. Goldhaber and D. Brewer, "Why Don't Schools and Teachers Seem to Matter? Assessing the Impact of Unobservables on Educational Productivity." Journal of Human Resources, Volume 32, No. 3, Summer 1997, pp. 505-523.