Science of Reading • JK–5 • Powered by Lexia®

Give your child reading mastery. Easily, at home.

Lexia® Core5® is the proven tool used in schools to build true reading mastery. Now your child can do it at home, in 10–20 minutes a day, with a Radical expert guiding every step.

Pick your grade level Learn How it Works →

3.7 million kids learned with Lexia Core5 last year · Works for 95% of students · Backed by 20 gold-standard studies

Born to Speak. Wired to REad.

Taught at school. Mastered at home.

Classrooms teach the basics. But for most kids, reading mastery takes more. They need 1:1 systematic practice beyond the classroom. Lexia makes this easy, for them and for you.

Child in a classroom with headphones, smiling using the personalized learning path in Lexia Core5.

The Research-Proven tool

Meet Lexia® Core5®

Lexia takes over where group instruction leaves off.

Developed through Johns Hopkins and Boston Children’s Hospital, Lexia is the world’s leading program built on the Science of Reading. It works with each child individually, on exactly what they need next, at exactly their own pace, and reports everything to the teacher dashboard.

Lexia helped 3.7 million kids in schools just last year. Now it can help you child, right in your own living room, under the watchful expert guidance of Radical Reading.

See how Lexia at Home works →

Always at their exact level

Data-driven precision

Every small skill locked in

Flags wobbles early and fixes them

Lexia Core5 Facts

20,000+

Schools use Lexia Core5

ESSA “STRONG”

Lexia Earns the Top Evidence Rating

20 SCIENTIFIC STUDIES

The Proven Gold Standard

right to read

Lexia is named in the OHRC R2R Inquiry

Lark Barker monitoring student reading data to provide expert clinical oversight.

You shouldn’t have to guess how their reading is really going.

With Lexia + Radical, you don’t.

Your child builds skills in Lexia while a Radical expert watches their data, ready to step in the moment something slips. Nothing moves on until it’s locked in, so you go from hoping they’re on track, to knowing they are.

In French Immersion? See how Lexia helps

Dyslexia or other learning difference? We can help

Lark Barker speaking at the podium for the Ontario Human Rights Commission Right to Read Inquiry.

Lexia + Radical

Proven by science.
Driven by passion.

Radical's Director of Education, Lark Barker, helped shape Ontario's Right to Read movement — a decade spent changing how schools teach reading. Radical is how she completes that work: one child at a time, with Lexia in your living room.

“System change takes years. Childhood happens now.”

—Lark Barker, Director of Education

Our mission and story →

What we want for every child

Now

They stop sounding out and start devouring.

And for a lifetime

It starts with words.
It ends with the world.

A child who reads with ease reads more. And every book lifts the next. Confidence grows, subjects open up, and the slope of their whole education tilts upward. Reading that never quite clicks quietly caps what a child will try. Early mastery raises the ceiling on everything that comes after.

See how early reading compounds →

Born to Speak. Wired to REad.

Give your child true reading mastery.

Pick your grade level to learn more and get started.

Flexible monthly subscription, switch, pause or cancel anytime.

Need expert advice? Ask Lark