When I use Ride the Wind on a Ravenbloom Student on an opponents turn into Abandoned Hall, does the Ravenbloom Student become 4 might by triggering both Ravenbloom Students passive and Abandoned Halls as the spell and units resolution is in that location.

Yes — the Student becomes 4 Might, and both buffs apply.

Here's why: Ride the Wind is only considered "played" once it fully resolves (Rule 412.1.b per FAQ). By that point its effect has already moved the Ravenbloom Student to Abandoned Hall and readied it, so when both "when you play a spell" triggers are checked and placed on the chain, the Student is physically at Abandoned Hall. Its own ability gives it +1 Might, and Abandoned Hall's trigger — controlled by you as the player who played the spell (Rule 190.6.c) — lets you give a unit you control here +1. Since the Student is "here," both stack: 2 Might base → 4.

One timing note: Ride the Wind is an [Action] spell, so on the opponent's turn it can only be played during a Showdown — which matches the FAQs that already confirm Abandoned Hall's buff lands on a unit Ride the Wind moves in (e.g., FAQ #11430, #11415).