DURING A PA28 STUDENT PLT'S INITIAL SOLO FLT; THE ACFT DRIFTED L OF CTRLINE ON TKOF; AND THE R WING STRUCK THE TAIL OF A C152. THE C152 WAS HOLDING IN A TURN OFF AREA. RWY EXCURSION. ACFT DAMAGE.

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A STUDENT AND I HAD JUST LANDED AND TAXIED CLR OF THE RWY AND WERE HOLDING SHORT OF THE TXWY FOR A CLRNC TO TAXI AND 2 NBOUND ON THE TXWY. WE WERE ABOUT 15 FT FROM THE RWY. A WARRIOR WITH A STUDENT PLT ABOARD WAS CLRED FOR TKOF. DURING HIS TKOF ROLL; THE AIRPLANE VEERED OFF THE L SIDE OF THE RWY. I DID NOT NOTICE ANYTHING; NOR HAD I HEARD THE WARRIOR CLRED FOR TKOF. MY STUDENT AND I FELT AND HEARD A BIG BANG AND I LOOKED TO MY R TO SEE THE WARRIOR TAXIING IN THE TURN OUT AREA NEXT TO US. HIS L WINGTIP IMPACTED MY RUDDER. THERE WAS DAMAGE TO THE RUDDER AND WINGTIP. THE STUDENT PLT IN THE WARRIOR WAS ON HIS 3RD TIME AROUND THE PATTERN ON A FIRST SOLO. IT IS MY BELIEF THAT HE LOST CTL OF THE AIRPLANE (NOT ENOUGH R RUDDER). THE INSTRUCTOR RESPONSIBLE FOR THE WARRIOR PLT SHOULD NOT HAVE SOLOED HIM IF HE COULD NOT MAINTAIN DIRECTIONAL CTL OF THE AIRPLANE. AT EL MONTE; THE CHANCES OF A COLLISION TO OCCUR IN THE TURN OUT AREA ARE; IN MY OPINION; ALWAYS GOOD. IT IS A CONTINUOUS TURN OUT AREA RUNNING THE LENGTH OF THE RWY; AND NOWHERE IS IT CLRLY DEFINED AS TO WHERE AN ACFT SHOULD BE BEFORE THE NEXT PLANE IS CLRED FOR TKOF. SUPPLEMENTAL INFO FROM ACN 329152: I VISUALLY INSPECTED GAUGES; AND UPON COMPLETION NOTICED I HAD DRIFTED L OF CTRLINE (STILL ON RWY) AND APPLIED R RUDDER FOR CORRECTIVE ACTION TO REGAIN CTR. AT THIS MOMENT I HEARD AND FELT A NOISE AND A JERK OF THE PLANE TO THE L. I IMMEDIATELY REDUCED ALL PWR; ABORTED TKOF AND CLRED RWY. DEBRIS WAS ABOUT 10 FT OUTSIDE RWY LIGHTS. MORE VIGILANCE ON MY PART TO THE EFFECTS OF P- FACTOR AND ATTN TO GND POS WILL ELIMINATE FUTURE OCCURRENCES OF THIS INCIDENT.