The family of Ann Maguire, 61, were in the courtroom in Leeds for the first appearance of the youth, who cannot be named for legal reasons.
The boy, whose right arm was in plaster, spoke only to say "yes" in response to questions from an official at the special youth court and nodded to his own parents.
The teacher's husband Donald stared at the youth as he was led into the glass-fronted dock, and clutched the hands of his two daughters during the two-minute hearing.
The youth was arrested at the scene and charged with murder yesterday.
He will appear again at a higher court tomorrow.
The teacher's family earlier paid tribute to Maguire, who was months from retirement, as their "shining light".
"She brightened the world for so many of us," they said in a statement released through police.
"A loving wife, the best mother, a treasured sister, a true friend. This horrific happening has robbed us of all of this and so much more."
Prime Minister David Cameron's spokesman meanwhile supported local calls for a permanent memorial to be erected to the teacher, saying it would be "fitting".
Violence at British schools has risen in recent years, and there has been growing concern over knife attacks involving teenagers.
But it is the first case in which a teacher is alleged to have been killed by a pupil in a classroom.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
