|The following is based on Fallout Shelter and some details might contradict canon.|
The classroom is used to train dwellers' Intelligence. The room requires 30 dwellers in order to be unlocked. You can place up to 3 classrooms next to each other horizontally to increase both the size of the room and the number of dwellers that may be assigned to it.
At level three the classroom, called an Academy, will occasionally have the lights shut off for administration of the G.O.A.T. Examination. This is not a glitch in your power grid, and does not pose any risk to the vault.
The upgraded version of the triple-sized rooms have caged hamsters, an animal that does not appear in any other Fallout game.
|Single Room||Double Room||Triple Room|
|Output||+1 to Intelligence stat||+1 to Intelligence stat||+1 to Intelligence stat|
|Upgrade Bonus||Increased training speed||Increased training speed||Increased training speed|
|School Upgrade Cost||1500||2250||3000|
|Academy Upgrade Cost||4500||6750||9000|
|Intelligence Stat||Level 1||Level 2||Level 3||Time|
|1 to 2||26 m||25 m||22 m|
|2 to 3||1 h 20 m|
|3 to 4||2 h 41 m|
|4 to 5||4 h 29 m||4 h 8 m|
|5 to 6||6 h 44 m||6 h 22 m|
|6 to 7||9 h 26 m||8 h 40 m|
|7 to 8||12 h 35 m||11 h 34 m|
|8 to 9||15 h 43 m|
|9 to 10||19h 39m||17h 38m|
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