Álvarez first attended the Mott Hall School for gifted and talented students in Morningside Heights, where he was an A student. He then attended the prestigious Horace Mann School in the Bronx, choosing a school known for its high-level education but not for its sports programs. Álvarez holds numerous baseball records there, most notably home runs, batting average, on-base percentage, slugging percentage, and RBIs.
Álvarez began his academic career at Mott Hall School in Morningside Heights, where he was an A student. He then attended Horace Mann School in the Bronx, a prestigious institution known for its high-level education but not for its sports programs. Álvarez holds several baseball records there, including home runs, batting average, on-base percentage, slugging percentage, and RBIs.