Stanley/Best medium-duty cylindrical lockset with Classroom function and contour angle return lever, product #73KC7R15D-STK-626
Classroom function locks are controlled by a key in the outside cylinder, which locks or unlocks the outside lever. There is no means of locking or unlocking the outside lever from inside the door. (Such a feature would require a lockset with the Classroom Security function.)
Lock core NOT included.
