Across:
8 Psychologist dismisses pigsty (‘psychologist’ dismisses ‘pigsty’ = scholo = SCHOOL) or is that the teacher’s place? (SCHOOL),
9 Most of (s) the drugs (“uppers” without “s” = UPPER-) chemically mixed (-CUT) (UPPERCUT) will floor one of those in Ring (UPPERCUT punch in boxing ring),
10 Bottle from Italian (bottle ‘from Italian’ = OMIT) Passover? (OMIT),
11 Drink (WATER) from various springs (JUMPS) (WATER JUMPS) added to the course to challenge some Arabs (WATER JUMPS added to the course to challenge some Arab/Arabians horses),
12 It’s difficult to figure out (RIDDLE) what this is? (this clue is a RIDDLE),
14 In a manner of speaking, rough (GUTTURAL) tow (tug = GUT-) up (= reversal indicator) to square (-T- square) on mountain range (-URAL) (GUTTURAL),
15 Said almost simultaneously (IN THE SAME BREATH) without coming up for air (IN THE SAME BREATH),
18 Must (must = STUM-) rearrange (= anagram indicator) half the accommodation (half of ‘B&B’ = -B-) for the French (the = -LES) (STUMBLES) trips (trips/falls = STUMBLES),
20 No menace in trace element (no ‘menace’ in ‘trace element’ = trelet = LETTER) that came in the post (LETTER),
22 Grass (LAWN) finally cut (finally ‘cut’ = T-) in Clare (-ENNIS) (LAWN TENNIS) by one of those in 14 down, for instance (LAWN TENNIS is one of the ‘games’),
24 Both sides of town centre (on both sides of ‘town centre’ = TORE) ripped to shreds (TORE),
25 Worker’s (MEN-) curse (-SWEAR) (MENSWEAR) produced by a number of male outfits (MENSWEAR),
26 Duke (-D) Wayne (Wayne = YAWNE-) played (= anagram indicator) from the start (= position indicator) (YAWNED) as if one was bored (YAWNED).
Down:
1 Something fishy (SCAMPI) about (= reversal indicator) address (IP address = -PI) to Mac’s (macs = SCAM-) (SCAMPI),
2 Jeer (BOO-) first team (first ‘team’ = -T) (BOOT) in Italy for the locals (Italy = BOOT),
3 Loud music (forte = F-) is observed by the police (-LAW-) at takeaway (-LESS) (FLAWLESS) – what sound is that? (sound = FLAWLESS),
4 Saw stuff (DUST) covered up in beleaguered US Treasury (covered up in ‘beleaguered US Treasury’ = DUST),
5 Tears (rips = SPIR-) around city centre (‘city’ centre = -IT) (SPIRIT) – it’s from another world! (SPIRIT),
6 Unfurled at (unfurled at = FRAUDULENT) building (= anagram indicator) known to be corrupt (FRAUDULENT),
7 Put plans (put plans = SUPPLANT) out (= anagram indicator) to fill someone’s boots (SUPPLANT),
13 Cast aspersions on the sociability of (DEHUMANISE) person (-HUMAN-) in Waterford (Waterford = An Déise = DE-ISE) (DEHUMANISE),
14 Ran off manager’s (‘ran’ off ‘managers’ = mages = GAMES) practical jokes (GAMES),
16 That mindless lot (NUTCASES) produced the shells? (nuts produced the shells/cases = NUTCASES),
17 Sweet (BULL’S EYE) or beastly view of the farm perhaps? (BULL’S EYE),
19 Looked like a wolf (LEERED) in river (River LEE-) approaching sea (-RED Sea) (LEERED),
21 Brought in (EARNED) local to make bread (EARN-) to get half (half) the start-up funds (half the ‘seed’ money = -ED) (EARNED),
23 Some leave men’s room (‘some’ leave ‘mens room’ = mnro = NORM) as usual (NORM),
24 Selling out of wellingtons (‘selling’ out of ‘wellingtons’ = wton = TOWN) in urban area (TOWN).