Please don't worry, your school is right.
Put your grammar school choice as first preference. If your child doesn't make the grade required for grammar school that choice is discarded by the authority and your second choice will be your first preference.
You may make the criteria (if they have to use one due to over subscription) of both your second and third but you will be offered only 1 the highest ranking one you put down.
Have a look at this..
Itâ€™s a stressful time and we have all worried about making the right decision knowing what we decide now is going to effect our childrenâ€™s lives for there future.
Just know there are a lot of people on this website willing to share there experiences with you..
Take care for now..