I really like this passage from Anne of Green Gables (I'm reading it to my daughters). It is about Anne's teacher, Miss Stacy:
'Much of this was due to Miss Stacy's tactful, careful, broad-minded guidance. She led the class to think and explore and discover for themselves and encourage straying from the old beaten paths to a degree that quite shocked Mrs Lynde and the school trustees, who viewed all innovations on established methods rather dubiously.'
Thank goodness for teachers like Miss Stacy, who are prepared to challenge and inspire children through what others may consider to be unconventional means.