For information that is absolutely essential to parents, post it on the front door with a simple, easy to read flyer.
Information that falls into this category may include:
- Payment Due Dates & Deadlines
- Studio Closures (Generally, this is posted one week in advance)
- Special Event Information (Parent Observation, A Message About Recital, etc.)
With the visual in a prominent spot, it is more likely to register with the bulk of your clientele.
(Of course, it is important to make sure you have multiple points of communication in place.)