Read Sueños y Pesadillas by Liliana Velásquez. The author is a 2017 graduate of Lower Merion High School. Liliana lives locally and can be invited to speak in schools.
High school students interview immigrants (then students could either interview someone themselves, brainstorm questions to ask, or do skits where one student is a famous immigrant and one is the reporter interviewing him/her)
El Norte (film). Watch then have students pair (or do 1:1 teacher oral assessment) about the scenes.