@Sammi78, hello and welcome to the community, many people maybe to many people feel or think they or their family members are entitled to claim certain benefits and PIP being one of them. PIP is awarded to help the claimant with their daily live activities and mobility issues. When claimants apply for PIP the form give very detailed of what information in needed required to send in with the application form. Having got this far must be enough to give you an indication that you are rightly or wrongly applying for PIP for the right reasons knowing that you meet the criteria of the PIP descriptors. Having had your assessment and hopefully requested a copy of your assessment report you can apply for an MR to be done within 30 days of receiving your award notification letter this can be done initially by phone then followed up by a written request given examples of what happened the last or every time the PIP descriptor you are contesting is tried or attempted, be prepared for disappointment as only a few MR get upheld and you may have to go to a tribunal hearing which are more successful when you attend in person but the down side is the time frame from requesting a tribunal hearing to actually getting one can be and usually a 12 months wait. 

@Earlysound, Well done for your advice and bringing it to the attention of the wider community this will go a long way to help a lot of people with learning disabilities who want to further their education.