Is matharu cast belong to scheduled caste?

Matharu or Matharoo(ਮਠਾੜੂ in Gurmukhī script) is a prominent Sikh clan belonging to the Ramgarhia and Jatt tribe.
Sir Denzil Ibbetson counted the Matharus as one of the major Tarkhan tribes of the Punjab and the Northwest Frontier Province, centred in Amritsar, Jalandhar, Lahore and Ludhiana.  

The Matharu clan originated from Punjab. The origin of Matharu was a Jatt clan. Later they were thought of and were eventually accepted into the Ramgarhia and Jatt (mostly Tarkhan) communities, taking up carpentry and agriculture.

They were skilled artisans in the craft of woodwork, ivory and ebony inlay work and ironcraft.
Matharus also have historical connections with people named Nanda.
Matharus claiming Jadaun Rajput ancestry are found in Sialkot, Narowal, Gujranwala, Hoshiarpur, Jalandhar, Patiala and Ludhiana districts.  
Variant forms of the name include Matharoo, Mathru and Matroo. It is believed that people using Mathru, Matharo, Matroo belong to Jatt Tribe.