Tell the teacher that you want to purchase ballet tap shoes. Since these shoes allow you to dance on your toes, a teacher needs to evaluate whether the dancer has enough experience to dance properly with the shoes.
Find the brand of shoes that you prefer. When purchasing ballet tap shoes, it's best to purchase the same brand as your pointe shoes. If this isn't possible, then try all of the different brands.
Search online and look through the dance catalogs that have the brand of ballet tap shoes that you are looking for. Stores do not always display all of the shoes of a particular brand. But by looking on websites and in catalogues, you can find more choices.
Visit the dance store and have the dancer try on the ballet tap shoes. They should not feel too tight or too loose. Have the dancer stand on her flat feet and make sure that the shoes are not pulling. Then, she should go up on the box of the shoe. If the material near the toe of the shoe is pulling to one side, the shoe is not a good fit. Also, make sure that the shoes do not feel too heavy.
Make sure that the dancer tries on all of the shoes that you had preferred in catalogs and on websites. If there is a pair of ballet tap shoes yet to try on that is not in the store, ask if it can be ordered.
Ask the store about its return policy before you make the purchase. If the ballet teacher wants to make sure that the shoes fit the dancer, she will need to try the shoes on for the her. If the teacher does not like the way the shoes look, she will probably ask you to return them.