As the title says, is there a mod or a way to trick the game into allowing a sim with an adult body/rig to be a "teenager" such as go to school? I assume if there was an easy way i would of found it but i thought it never hurts to ask here.

Thank you.

Sorry for the wrong forum, but i'd like it as i hate the teen rigs in the sims 3 and the lack of cc. Id also like to be able to have more options for them.

you mean you want teens to have the same builds, ie height, weight and muscle/fitness builds as adults do like the Sims 4? I think they look fine like real teenagers. Sure they don't have many outfit options without custom contents and there's also a mod to fix muscle slider on teen.

Short answer... yes, Nraas (I think) Master Controller has CAS options to allow teens to wear adult clothing, beards, accessories, as well as elders to wear adult items.

Long answer, it doesn't look good (unless you only want teens to have adult boobs, and don't care about overall appearance of the Sims). Adult and teen meshes are different (although the UV is basically the same), and seams at the neck, waist and ankles do not blend, leaving a visible line that can only be fixed by matching seams in Blender (I use) or probably Milkshape. Also, the game has a hidden slider set that adjusts the proportions of teens, as the two meshes are the same general height in Blender. This makes teens using adult meshes appear short and squatty (I do not know another way to describe). Some of the odd proportions can be "fixed" using a bunch of sliders, but when the teen ages up, you are back in CAS, "de-adjusting" them.