Where are the hatches above Kids' Dorms / Dorms Main Hall?

There are no hatches directly above it.

Oregon: Kids' Dorms / Dorms Main Hall (2F)

Q: How do you attack Kids' Dorms / Dorms Main Hall on Oregon?

Hard breach the Kids' Dorms east wall from Attic-side room (siterep calls it 'Low Attic'). Thermite. Hibana.

Oregon · 2F · Kids' Dorm

Kids' Dorms / Dorms Main Hall is a second floor bomb site on Oregon, planting in Kids' Dorm. Attackers usually hard breach the Kids' Dorms east wall from Attic-side room (siterep calls it 'Low Attic'). There are no hatches above it. Strong picks here include Mute, Azami, Melusi and Mira.

Low Attic breach into Kids' Dorm
Main Hall anchor plays off Big Window
Watch White Stairs for late flank

Oregon 2F floor plan with Kids' Dorms / Dorms Main Hall — 2F floor plan (official Ubisoft blueprint)

Oregon floor above Kids' Dorms / Dorms Main Hall — The floor above

Breach walls

Kids' Dorms east wall, from Attic-side room (siterep calls it 'Low Attic').
Master wall into Dorms Main Hall, from Master Bedroom / Balcony.

Hatches and vertical play

Nothing usable. Kids' Dorms and Dorms Main Hall sit directly under the main house's pitched roof. Ubisoft's reworked blueprint has no floor above this block (the only higher space on the map is the top of Big Tower) and no roof hatches. The 'Attic' is NOT above Kids: it is a 2F-level room over Meeting Hall that runs from Big Tower and, since the Y5S1 rework, opens into Dorms Main Hall through a doorway.

Windows and outside play

Kids' Dorms exterior windows.
Big Window.
Balcony door / windows.
medium: Kids' Dorms has outside windows that need a rappel breach, Big Window covers the Dorms side, and the south Balcony gives an exterior entry into Master; risky without Attic and Master cleared.

Rotations

Kids' Dorms–Dorms Main Hall wall.
Attic doorway into Dorms Main Hall.

Anchor spots

Kids' Dorms back corner.
Dorms Main Hall by White Stairs.
Attic (delay).

Flanks

White Stairs (1F to 2F) and the Armory / Main Stairs side.

Best operators for Kids' Dorms / Dorms Main Hall

Attack

Thermite.
Hibana.
Ace.
Thatcher.
Iana.
Nomad.

Defense

Kaid.
Bandit.
Mira.
Azami.
Valkyrie.
Smoke.

Picks that work here

Mute: Strong anchor on Oregon.
Azami: Strong anchor on Oregon.
Melusi: Strong pick on Oregon.
Mira: Strong pick on Oregon.
Smoke: Strong anchor on Oregon.
Warden: Strong anchor on Oregon.
Kaid: Strong anchor on Oregon.
Clash: Strong anchor on Oregon.
Nomad: Strong anchor on Oregon.
Aruni: Strong pick on Oregon.
Fenrir: Strong intel on Oregon.
Valkyrie: Strong pick on Oregon.
Oryx: Strong roamer on Oregon.
Frost: Strong anchor on Oregon.