Professional communication involves a prompt response and appropriate language. Address the person by name and/or title and end with your name. Use formal sentence structure, mechanics, and grammar, and avoid text and slang language.
Generally, a professional response time is 1 business day (M-F). It is better to respond timely even if you do not have all requested information or answers. This lets the sender know you got the communication and will be following up more completely later.
Professionalism is one of the evaluation criteria during your student teaching placement.