Yes, providing no one in your household has symptoms or has been exposed to COVID-19.
No, your child must stay home and get tested. If the results are negative and your child is symptom free he/she may return to school.
No, your child may not return to school until she completes a COVID-19 test and results are obtained. If she receives negative results AND is symptom free she may return.
Your child who attends the other school must get tested. While waiting for the results your child attending Humberside must remain home as well, until test results are obtained (even if he/she is not showing symptoms).