Give the Subject and Text fields global storage, then the same data is stored for all your student records. This is the simplest change, but may not be what you want as this allows you to send emails, but you can't save the info of past emails in your database.
It's also possible to set up a table separate from your students where you compose emails so that you can save past emails for future reference, but use a relationship so that an email sent from the students table will use text and subject from the current record in this related table.
Brilliant! That solved it. I don't require a comprehensive email system where the database holds records. I BCC a copy to myself and that will suffice. Thank you for time and knowledge!