Sometimes called a teaching internship, student teaching is an integral part of any teacher education program.
Requirements vary by state.
Usually, a set number of hours in the classroom are required. Most certainly, there will be times set aside to formally evaluate your progress. You should contact your Department of Education to find out what the internship component requirements are for your state. If you are currently enrolled in a college education program, you should be able to find this information from a counselor. Student teaching provides both an excellent educational opportunity and often a considerable amount of stress for an aspiring teacher.