All mages share common abilities which manifest around the age of six. Standardized testing of these abilities over the next ten years help determine the best course of training. The most common of these abilities are: simple telekinesis, glow spells, levitation, and object invisibility. Another attribute of all schools except one is that no mage can cast a spell on themselves or benefit from a potion they have made.
Mages must cast at least once a day, though potions contribute very little effect to this requirement. In modern lifestyle for a mage not employed as a mage, especially mages outside of New London, they will cast multiple smaller spells thorough the day to keep the magic out of the limelight. The Mage Employment Act require employers to offer mages magic-breaks akin to smoke breaks.
Magic consists of two forms: spells and potions. Most spells can be rendered into a poultice or liquid through a process called, Condension, from which even non-mages can benefit. Condensive products are only effective until the next time the responsible mage falls asleep. The process isn’t understood precisely, but many believe a potion is just a type of active spell. This makes some sense because most unconscious mages can’t cast spells, but this theory doesn’t explains why potions don’t fulfill the daily spell cast requirement. Or why powerful Psychic mages can’t maintain condensive products since they can cast magic through their dreams.