No, Tuvok did not train at the Advanced Tactical Command school during that time. He had just left Starfleet Academy after 16 years in 2365. So it was unlikely. Ro Laren would have trained with Tuvok at the Academy but his rank at the time was still Ensign.
Ro Laren entered Starfleet Academy in 2358 and graduated with the class of 2362. (TNG: "Conundrum", "The Next Phase") - Memory Alpha > Ro Laren
Data on Tuvok
Recognizing that there was much he could learn from other races such as humans, Tuvok entered Starfleet again in 2349 and served as an ensign on the USS Wyoming. (VOY: "Flashback") Tuvok was an instructor at Starfleet Academy for sixteen years, a role he resumed aboard Voyager in order to instruct Maquis crewmen in Starfleet protocols. (VOY: "Learning Curve") He also served as instructor to Icheb in his pursuits to join Starfleet. - Memory Alpha - Tuvok
The other problem with this question was Ro Laren was assigned to Advanced Tactical Command School in 2369-2370 before returning to Enterprise. Chakotay was supposedly resigned from Starfleet by 2368, so how could she have ever met him in the first place?