Both Animoto and Microsoft's terms of service could potentially be used with a class of twelve year olds according to the snippets provided, if certain conditions are met:
1. The teacher ensures the tool is appropriate and researches privacy policies.
2. For teacher-directed tools, students do not need to falsify age. For student-chosen tools, students must understand privacy policies.
3. The school's AUP allows teachers discretion in choosing tools that require older ages, as long as privacy is taught.