Flasks is a non-tradable currency system used in SCL, which teachers can use to create badges for students. Each badge has a certain "flask value" depending on its quality, which is deducted from the teacher's account when creating or awarding a badge to a student. Flasks can also be used to exchange vouchers from the school as part of a merit-pointing system.
There are various ways to obtain flasks, including creating merit incidents related to behaviour, publishing Interactive Assignments, crafting and selling badges on the badges market, or engaging with games available in the SCL Games Center.