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. Do Lexia at Home, with a Radical 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 Core5 last year · Works for 95% of students · Backed by 20 gold-standard studies

Born to Speak. Wired to REad.

Speaking is natural.
Reading is learned like piano.

Piano is a complex skill that must be taught and practiced. You learn scales, then chords, then both hands, until you stop thinking about any of it and just play. Reading is built exactly the same way, each small skill woven into the next.

A classroom can teach basics to the group. Mastery takes a different amount of teaching for every child. Knowing how much, and when, takes one-on-one.

Taught at school. Mastered at home.

Lark Barker, Director of Education

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 finds your child's exact level on day one and adapts every session, building each skill until it's locked in.

Lexia is what lets a classroom teach each child something different. Schools have used it for years. Now your family can have it at home.

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. Their data comes straight to a Radical expert who reads it every day and steps in the moment something slips. Nothing slips by unnoticed. Nothing moves on until it's locked in.

So you always know where they stand: what they mastered this week, what's coming next, and what we did about anything that wobbled. 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 Radical delivers for families

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 your child 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