Three schools will combine to form a multi-academies trust as part a major new approach to secondary school systems in Wigston.
Abington Academy, Bushloe High School and Guthlaxton College, all in Station Road, will merge to form "Wigston Academies Trust", which will be responsible for all three academies from spring term 2015.
As well as this, Abington and Bushloe will combine to become "Wigston Academy" in September 2015.
Alex Green, head teacher at Abington Academy, said: "It is well within the best interest to form a multi-academy, which has been in discussion for over two years."
The age range at the new school will change from 10-14 to 11-16, allowing for a two-tier system to replace the previous three-tier one. Changes in age ranges are expected to take place in September 2016.
Mr Green added: "Together, we're stronger. Alongside the college, we can build on our strengths and try to secure a continuous, high-quality 11-19 provision on the campus."
Abington and Bushloe were both rated 'good' in their most recent Ofsted inspections.
Ian Cox, co-head teacher alongside Ann Webster at Bushloe High School, said: "We're delighted by the tremendous response we have received to the change."
Ann Webster added: "We have arrived at the end of one phase of the journey taken together as a group of schools, and arrived at a place that will improve life chances for all our pupils."
Meanwhile, Guthlaxton College will offer post-16 education on the same site, and will change its name to "Wigston College."
Principal Sally Cox said: "This provides educationalists in the borough with a unique opportunity to serve the young people of Wigston with seamless education provision 11-19."
The change was confirmed after the Department for Education, Education Funding Agency and Regional Schools Commissioner agreed to the proposals last month.
Sir Edward Garnier, MP for Harborough, said: "I have been working with the three schools to help them achieve this result and I am delighted that the merger has been approved.
"This decision paves the way for better use of resources, teaching facilities and a combined campus school that will be in the best interests of the students and their overall education."