Sefton's primaries were ranked in the top five in Ofsted's new league table which reveals inspectors' ratings for schools throughout the country.
Bill Esterson said the Ofsted's league table had confirmed what he had already suspected - many of Ofsted's primary schools are outstanding.
Bill said: "Primary schools are crucial to give our young people the best possible start in life. How effectivly a primary school has taught the basics very often dictates how well a pupil does in secondary school and that in turn dictates how well they do in life.
"So it is fantastic for the whole borough that our primary schools here are in the top five for the whole country. It shows that young people here are on the whole getting a good grounding for the very start of their school lives.
"My children attended a primary school in Sefton Central, my youngest still does. The quality of teaching, the care and the early school experience they have received at the school really has been second to none.
"So this league table just confirms what many of us have known for a long time."
Bill congratulated all of the schools for scoring highly in the new league table, which recognised that 90% of the borough's pupils attend a good or outstanding primary school. He also praised the council for the support it gives to schools across Sefton.
Bill said: "I have visited lots of our schools in Sefton Central and I am always astounded at the quality of teaching which I see.
"We clearly have some of the best schools in this borough and we should be very proud of that.
"We still have work to do to push through the 90% mark. We need to ensure that all of our young people are attending outstanding schools.
"I know that my Labour colleagues on the council and the schools themselves will not rest on their laurels, but will continue to strive for excellence for our young people and ensure that any schools which are struggling are given the support they need to achieve.
Well done to the staff, to the children and to Sefton Council officers and members for the excellent results."