Add “include:pcrsoft.com” to your existing record.
For example, if your existing SPF record looks like:
v=spf1 a mx include:_spf.google.com include:spf.protection.outlook.com -all
Just add “include:pcrsoft.com” at the end of the string, before the “*all” part:
v=spf1 a mx include:_spf.google.com include:spf.protection.outlook.com include:pcrsoft.com -all
 

See also
SPF Record   
PCR Educator K-12 School Information System is an online database engineered for independent and private schools to deliver the highest level of flexibility, unique experience, transparent communication and customized design. Being a complete cloud-based solution, PCR Educator system guarantees convenient access anytime, anywhere.