While each school district has distinct requirements for a student to transfer there, typically, registration is in the early spring. Contact your local school district to ask about steps, documents, and deadlines for registration.
Ask about any placement testing your child may need, and any programs your child may be eligible for. If you believe your child should be tested for a gifted program, you have specific rights around this request that schools must adhere to. Do not hesitate to ask the district for details and timelines.
Many schools will allow students to have a Shadow Day or Visit Day in the spring.