The teen was charged with trespassing in six incidents in the subway system recently.
He was previously charged with moving an R subway train in Brooklyn on January 25 and attempting to enter the conductor's cab of a number 2 subway train in the Bronx on Feb 18.
The teen set off a metal detector while entering the Bronx's Alfred E. Smith Technical High School.
School safety agents say they found MTA gear in his bag, including an orange MTA vest, transit radios, train keys and an MTA identification card.
The student ran out of the school and left everything behind.
He was later taken into custody at a Bronx home.
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