made a surprise visit to his I Promise School in Akron on Thursday ... and he came bearing a REALLY big gift -- a $1 MILLION check!!
The NBA superstar presented a grant from the DICK's Sporting Goods Foundation ... which will go towards building a brand new gym for his already-freakin'-awesome school.
The gym will be used for phys. ed classes, after-school activities and act as a safe space for local kids after hours.
“To my kids, this is more than a gym,” Bron says of the gift. “The DICK’s Sports Matter program is helping us provide even more opportunities.