6yo daughter referred to RTI program at school. Need help understanding and next steps!

We received a letter from our daughter's school that she has been identified as a candidate for the RTI (can't remember what that stands for) program. There's not a lot of explanation in the letter - no criteria, indicators, test results, etc. that explain why or how they came to this decision. I started googling more about the program and it says it is for kids who have learning or behavioral needs. My daughter is very smart, but I can see that it is sometimes harder for her to focus when someone is directing her to do something. She is not hyperactive and has no problem staying on task or focused on one thing for extended periods of time when it is something she has decided to do herself.I have called and emailed the person whose signature is at the bottom of the letter but have not received a response. We need to know more about what's going on, why they have decided this, what issues are present, and what the plan is so that we can help at home. Of course the lady's mailbox is full. We recently moved from a school that was not well-ranked (3/10) to one of the best elementary schools in the state (10/10). Is it possible the preschool and kindergarten background my daughter received just isn't up to par with the new school and she needs help catching up or does this mean there is something more going on. Should we have her seen by a doctor or specialist?Any help or experience you have to share would be greatly appreciated! If I don't hear from the person on the letter today, I will send a note back to her teacher tomorrow. via /r/Parenting http://ift.tt/2bMvhFE