It said its schools were "proactive in engaging with parents and the community to address concerns", it offered regular parent surgeries and clear routes to raise complaints and that it "encouraged any parent or member of staff to raise concerns with us directly".
"Our academies have more than double the national average number of students with Education, Health, and Care Plans (EHCPs), and consistently receive the highest ratio of consultations for students with EHCPs. This data demonstrates a commitment to inclusion and support for Send students.
"Attendance rates for all students, including Send and disadvantaged students, are significantly above the national average. This suggests that these students feel safe and supported in the school environment."
Responding to claims of racial bias toward pupils, the federation said: "Our schools pride themselves on being welcoming and inclusive for all our students and so we categorically deny these accusations of racism directed at our staff.
"Furthermore, we foster a supportive family culture within the Mossbourne Federation and we actively reject any form of discrimination in our academies."
It added that "over the years there have been a number of complaints received about hairstyles and all have been dealt with appropriately. Our policy has been reviewed and has evolved."
On allegations of teachers screaming at students, it said it "acknowledged that teachers may sometimes use a raised voice to ensure a focused and safe learning environment. However, there is no evidence to support claims of teachers screaming at, or verbally abusing, students."