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

Give your child
true reading
mastery.

Lexia® Core5® is the reading program proven in 20,000 schools. Get it at home, with a Radical reading expert as your guide. Just 10–20 minutes a day.

Pick your grade level Learn How it Works →

3.7 million kids learned with Lexia last year · Works for over 90% of students · Backed by 20 gold-standard studies

Born to Speak. Wired to REad.

Speaking is natural. Reading is built.

Every child is born to talk. A reading brain must be built — one connection at a time, in each child's own order. Ontario schools now teach reading the right way. But with 25 kids and one teacher, the math for mastery doesn't work. That's the gap Radical fills.

Built, not born

Every child can master reading. They just need the right explicit teaching for them.

One brain at a time

No two children build reading mastery in the same way, or at the same speed.

Compound interest

Early wins snowball. Strong readers read more, learn faster, pull ahead.

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

The Research-Proven tool

Meet Lexia® Core5®

Used in leading schools for years. Radical brings it home.

Developed through Johns Hopkins and Boston Children’s Hospital, Lexia is the world’s leading program built on the Science of Reading. It finds your child's exact level on day one and adapts every session — never bored, never overwhelmed — building each skill until it's locked in. Schools have had it for years. Now your family can.

See how Lexia at Home works →

Always at their exact level

Data-driven precision

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.

As your child systematically builds skills, Lexia sends us their data. A Radical expert keeps careful watch, and delivers personalized help if momentum dips. Every wobble is fixed before it grows into a gap. Every skill is mastered.

Teachers are heros, but in a classroom of 25:1, no teacher can deliver this kind of exacting individual attention that builds mastery for all.

“We complete what the classroom starts.”

Lark Barker, Director of Education

Dyslexia or other learning difference?

There’s a dedicated path →

In French Immersion?

See how Lexia helps →
Lark Barker speaking at the podium for the Ontario Human Rights Commission Right to Read Inquiry.

Lexia + Radical

Proven by science.
Delivered one child at a time.

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 at your kitchen table.

“System change takes years. Childhood happens now.”

—Lark Barker, Director of Education

Our mission and story →

Engineered Confidence

Praise doesn't build confidence. Skill does. Build the skill; the feeling follows.

From Decoding to Devouring

When the friction disappears, the love of reading appears.

Proof, Not Hope

You see the progress in the data — and in their confidence too.

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 them true reading mastery.

Pick your grade level to learn more and get started.

Flexible monthly subscription, no long-term commitment, pause or cancel anytime.

Have questions? Ask Lark