In terms of standardised guidance for Illegal and/or Foul Play and Misconduct, IRB Regulation 17 applies, and is used by nearly all judiciaries to assist to determine sanctions for citings.
Perhaps the various Sydney Schools Competition organisers should use these guidelines for Open Grade Schoolboy rugby, as opposed the loose motherhood statements for boys getting "red carded" that have been previously quoted from the ISA and CAS competition rules on this thread.
These are the sort of sanctions they will face in Colts, Grade and Subbies (as well as SJRU) judiciaries.
Judiciary Entry Point Based on Scale of Seriousness of the Player’s conduct, which constitutes the offending.
Law No.6.A.5, 10.4(k) Verbal Abuse of Match Officials,
Lower End 6 weeks, Mid Range 12 weeks, Top End 18+weeks, Maximum Sanction 52 weeks
Law No.6.A.5, 10.4(k) Physical Abuse of Match Officials
Lower End 24 weeks, Mid Range 48 weeks, Top End 96+ weeks, Maximum Sanction Life
Law No.6.A.5, 10.4(k) Threatening Actions or Words at Match Officials
Lower End 12 weeks, Mid Range 24 weeks, Top End 48+ weeks, Maximum Sanction 260 weeks
Law No.10.4(a) Striking another Player with a hand, arm or fist
Lower End 2 weeks, Mid Range 5 weeks, Top End 8+ weeks, Maximum Sanction 52 weeks
Law No 10.4(a) Striking another Player with the elbow
Lower End 2 weeks, Mid Range 5 weeks, Top End 9+ weeks,Maximum Sanction 52 weeks
Law No 10.4(a) Striking with knee
Lower End 3 weeks, Mid Range 8 weeks, Top End 12+ weeks, Maximum Sanction 52 weeks
Law No 10.4(a) Striking with head
Lower End 4 weeks, Mid Range 8 weeks, Top End 12+ weeks, Maximum Sanction 104 weeks
Law No 10.4(b) Stamping on an Opponent
Lower End 2 weeks, Mid Range 5 weeks, Top End 9+ weeks, Maximum Sanction 52 weeks
Law No 10.4(b) Trampling on an Opponent
Lower End 2 weeks, Mid Range 5 weeks, Top End 9+ weeks, Maximum Sanction 52 weeks
Law No 10.4(c) Kicking an Opponent
Lower End 4 weeks, Mid Range 8 weeks, Top End 12+ weeks, Maximum Sanction 52 weeks
Law No 10.4(d) Tripping an Opponent with the foot/leg
Lower End 2 weeks, Mid Range 4 weeks, Top End 7+weeks, Maximum Sanction 52 weeks
Law No 10.4(e) Dangerous tackling of an Opponent including early or late and including the action known as the “stiff arm tackle”
Lower End 2 weeks, Mid Range 6 weeks, Top End 10+ weeks, Maximum Sanction 52 weeks
Law No 10.4(f) Holding, pushing or obstructing an Opponent not holding the ball except in a scrum, ruck or maul
Lower End 2 weeks, Mid Range 4 weeks, Top End 6+ weeks, Maximum Sanction 52 weeks
Law No 10.4(f) Dangerous charging or obstructing or grabbing of Opponent without the ball, including shouldering
Lower End 2 weeks, Mid Range 5 weeks, Top End 9+weeks, Maximum Sanction 52 weeks
Law No 10.4(g) Dangerous charging or obstructing or grabbing of Opponent with the ball, including shouldering
Lower End 2 weeks, Mid Range 5 weeks, Top End 9+ weeks, Maximum Sanction 52 weeks
Law No 10.4(i) Causing a scrum, ruck or maul to collapse
Lower End 2 weeks, Mid Range 4 weeks, Top End 8+ weeks, Maximum Sanction 52 weeks
Law No 10.4(k) Testicle grabbing or twisting or squeezing
Lower End 12 weeks, Mid Range 18 weeks, Top End 24+ weeks, Maximum Sanction 208 weeks
Law No 10.4(k) Biting
Lower End 12 weeks, Mid Range 18 weeks, Top End 24+ weeks, Maximum Sanction 208 weeks
Law No 10.4(k) Contact with Eyes or the Eye Area
Lower End 12 weeks, Mid Range 18 weeks, Top End 24+ weeks, Maximum Sanction 156 weeks
Law No 10.4(k) Spitting at Players
Lower End 4 weeks, Mid Range 7 weeks, Top End 11+ weeks, Maximum Sanction 52 weeks
Law No 10.4(k) Verbal abuse of Players based on Religion, Race, Colour, or National or Ethnic Origin or otherwise
Lower End 4 weeks, Mid Range 8 weeks, Top End 13+ weeks, Maximum Sanction 52 weeks