Exhibit 8.3 presents teachers’ reports about their years of experience. On average, fourth grade students’ reading teachers had been teaching for 17 years. Forty-two percent of the students had very experienced teachers with 20 years or more of experience, and another 30 percent had teachers with at least 10 years of experience.
Some research has found experience can have a large impact on effectiveness, especially during the first few years of teaching, and the PIRLS results show this pattern. Fifteen percent of the students had teachers with at least 5 years of experience and 13 percent had teachers with less than 5 years of experience, with somewhat higher reading achievement associated with teachers having more than 5 years of experience (510 vs. 505). Of course, there is a variety of policies about whether more or less experienced teachers are assigned to higher or lower achieving students.