Is there a form on-line that my student can fill out and sign that will allow me to be able to check on them (grades, health, etc....

Most schools do offer an online form that will permit access to grades, health, etc. From your student's school's home page - search for "FERPA Release," or call their Registrars office and ask if they have a FERPA Release form. This is usually something the student has to fill out on your behalf granting you access.