He was represented by Swindon solicitor Jonathan Lewis of Reeds.
District Judge Peter Greenfield remanded the boy in custody to appear before for Bristol Crown Court for a bail hearing on May 9.
His appearance before Salisbury Magistrates’ Court via video link from Melksham police station followed the death on Friday afternoon of Calne girl Ellie Gould.
Paramedics had battled to save the 17-year-old Hardenhuish School student after they were called to reports of a medical emergency at a house on Springfield Drive. She was pronounced dead at the scene.
Paying tribute to her former student, Hardenhuish headteacher Lisa Percy said: said: “I would like to thank everyone for all of the messages of support that we have received from past, present and future parents, colleagues and other members of the community.
"We would like to express our thanks to all partner agencies who have supported us too.
"The students, staff and parents have found comfort in being together and paying their respects to Ellie and our thoughts remain with her family and friends at this time."
Insp Don Pocock of Wiltshire Police added: "I would like to again thank the communities of Calne and Chippenham for the support and patience they have shown so far to our officers as they have carried out enquiries as part of this murder investigation. A case like this takes time and will understandably have an impact on the local community - so thank you for your help and understanding.
"Over the past few days people living in Calne and Chippenham would have seen an increased police presence which I appreciate can add more anxiety and upset to what is already a tragic situation. However, I want to reassure everyone that the officers and detectives involved have been working hard to carry out their duties as swiftly as possible to minimise the impact on those living and working here.”