When students grade teachers

When students evaluate their teachers, they’re remarkably good at identifying who’s effective and who’s not, writes Amanda Ripley in The Atlantic. Students evaluations have proved to be “more reliable than any other known measure of teacher performance—­including classroom observations and student test-score growth,”  researchers have found, Ripley writes.

Some 250,000 students participated in a Gates Foundation study of student evaluations, using a survey developed by Harvard economist Ronald Ferguson.

The responses did indeed help predict which classes would have the most test-score improvement at the end of the year. In math, for example, the teachers rated most highly by students delivered the equivalent of about six more months of learning than teachers with the lowest ratings. (By comparison, teachers who get a master’s degree—one of the few ways to earn a pay raise in most schools —delivered about one more month of learning per year than teachers without one.)

Students were better than trained adult observers in evaluating teacher effectiveness, probably because students spend a lot more time with each teacher. And there are more of them.

Five items were linked strongly with student learning:

1. Students in this class treat the teacher with respect.

2. My classmates behave the way my teacher wants them to.

3. Our class stays busy and doesn’t waste time.

4. In this class, we learn a lot almost every day.

5. In this class, we learn to correct our mistakes.

Teachers were surprised that caring about students was less important than controlling the classroom and challenging students, Ripley writes.

At McKinley Technology High School in Washington D.C., the same students “gave different teachers wildly different reviews” on Control and Challenge.

For Control, which reflects how busy and well-behaved students are in a given classroom, teachers’ scores ranged from 16 to 90 percent favorable; for Challenge, the range stretched from 18 to 88 percent. Some teachers were clearly respected for their ability to explain complex material or keep students on task, while others seemed to be boring their students to death.

Memphis now counts student survey results as 5 percent of a teacher’s evaluation in the annual review; 35 percent is linked students’ test scores and 40 percent to classroom observations.

The use of student surveys is spreading to Georgia and Chicago — and possibly Pittsburgh — Ripley writes.

London school seeks bouncers to ‘cover’ kids

Substitute teachers have to be tough, writes Carolyn Bucior, author of Sub Culture, in the Huffington Post.

A north London school advertised for bouncers, ex-Marines, policemen, firemen, athletes and actors to supervise students when teachers are absent. The key was experience in crowd control.

New teacher contracts were limiting the number of hours that teachers were required to cover for absent colleagues and thus more outsiders were being hired to lead classrooms, U.S. style. In England, a traditional substitute teacher, called a “supply teacher,” possesses teaching credentials and earns as much as a regular teacher per day; this bouncer-filled position, called a “cover supervisor,” required no credentials and paid far less.

A Montana school laid off a music teacher who’d forgotten to renew his credential but offered to hire him back as a substitute for himself.