You have been hired by School District Awesome to assess potential new curricula in its 7th-grade social studies instruction. The variables cover three conditions: 1) canned Power Points created by a professional education design firm vs. lesson plans created by the classroom teacher, 2) oral presentation projects vs. written reports, 3) in-class small-group projects with a designated student leader vs. the same with no designated student leader.

The school district has 6 middle schools and each school has about 240 7thgraders (8 classrooms of 28-32 students). The school district is 55% Hispanic, 10% black, 27% white, and 8% "other" (mostly Native American). The 7th-grade teachers are 20 white women, two white men, 11 black women, two black men, 12 Hispanic women, and one Hispanic man.

For each of the following sampling methods, tell whether it is A/Appropriate (and then HOW you would do it) or I/Inappropriate for this study (and then WHY it is inappropriate).

Simple Random - A or I

Systematic - A or I

Stratified Random - A or ICluster - A or I

Cluster - A or I

Purposive - A or I

Snowball - A or I