1. New Hampshire Student. Each applicant must be a student in any educational institution recognized by the State of New Hampshire and enrolled in grades 9-12 at the time of qualifying for the NHSEE. 2. Single Entry. Each student may enter only one project in the NHSEE. Each science project may have only one author. Engineering projects may have one to four authors. All work must be done by the student(s) named as author(s). Projects entered into the Expo under an individual's name but discovered by the judging panel to have been prepared by a team of more than one student will be disqualified. 3. Categorization. In the Project Registration student/teacher declare the category for which the project will be placed. The Directors of Judging will determine, upon review of submitted Project Summaries, the correctness of the category for each project. The NHSEE reserves the right to disqualify any project due to poor quality, incompleteness, or inappropriateness of project content. 4. New Research. Any project reentered from a past NHSEE must show substantial new research and development to be eligible for an award. Final determination shall be made by the category judges. 5. Supervision. Students not accompanied by their own parent(s) must be under authorized supervision by an adult escort, teacher, or administrator. Each student must have appropriate signed permission form(s) as required by his/her own school district. The NHSEE is not responsible for the supervision of any participant.