I am a professor in education, but I am taking a first-year Spanish class. I am trying to figure out how to say, "This weekend, I will be grading my students' lesson plans." I am having difficulty finding a verb that means "to grade." Is "calificar" the right verb? Would the following statement be correct?
"Este fin de semana, voy a trabajar. Tengo que calificar 23 planes de leccion para mis estudiantes."