Karen Warren, Houston Chronicle / Staff photographer Alessandro Hidalgo, center, works with his teammates Lemuel Pacheco, left, and Alexander Molina as they built a Lego robot in engineering teacher, Jason Bradley's class at Stevenson Middle School in HISD where there are students focusing on STEM who are immigrants, Monday, Jan. 28, 2019, in Houston. Karen Warren, Houston Chronicle / Staff photographer Victor Le, left, works with teammates Kimberly Turrubiartes, center, and Daniel Martinez as they were tasked with building a Lego robot in engineering teacher, Jason Bradley's class at Stevenson Middle School in HISD where there are students focusing on STEM who are immigrants, Monday, Jan. 28, 2019, in Houston.