This message may show up for returning students who do not have any subjects (goals) assigned to their account. Texas College Bridge students can ignore this message. All EdReady sites have this line hardcoded on the front page. There is no "key" for Texas College Bridge.
Students do not have any content to work on in Texas College Bridge until they are assigned to a goal by a teacher or admin. Most students are assigned to at least one goal/subject when they first register, but returning students have had their goals from last year removed.
To add a goal to your student's account, first make sure they have selected your class section and high school. This allows you to see their account on the Manage tab.
Then you can follow these instructions to Add a Subject to Student Account.