Continuity mistake: Whenever we see the Rangers morph it is always the same clip that is used to show this. This is especially apparent towards the middle of Season 2 when Zack has dreadlocks in the program, but his crew cut hair in the morph sequence. (00:07:25)
Continuity mistake: When the Villains send their cronies (for example, Putties, Tengu Warriors, Cogs, Piranhatrons, etc.), their numbers constantly change from when they arrive, to when they leave. This is due to the use of Japanese footage used from Kyoryu Sentai Zyuranger.
Continuity mistake: When the Rangers morph, the clothes they are wearing don't match what they have been wearing that episode - this also applies to hair.
Continuity mistake: In the 12 series (Power Rangers Dino Thunder), in the episode "White Thunder Part 3", The Red Ranger throws his blaster to the ground whilst fighting the White Ranger. In the wide shot, the blaster disappears.
Revealing mistake: Until the end of the 5th series, we can see part of the Zord costumes move about as the character in them walks about - sometimes they even look like they are going to fall off. This is particularly true in the 2nd series.
Visible crew/equipment: This happens mostly in the first 4 series - crew, lights, and equipment can be seen reflected in the Rangers helmets and visors.
Plot hole: Quite often the Rangers were contacted at school and would teleport to the command center, danger zone, etc. It is safe to say that the faculty would notice star pupils missing classes so often, yet it was never questioned or addressed.
Plot hole: The Power Rangers very often talk to the citizens of Angel Grove. However, their voices aren't disguised in any way, so why don't people recognise their voices?
Suggested correction: The entirety of Angel Grove doesn't know them personally. Also that is the power of voice over. You would never sound that clear while wearing a tight helmet that covers your mouth.
So what about when they talk to recurring characters such as the guy who works the bar at the youth centre (can't think of his name off the top of my head).
Haha. It is a bit like standard suspension of disbelief and a common mistake to most superhero TV/movies/comic books even, but I very much agree that there is no real way to make a rational and logical explanation for it. They do meet recurring characters a lot, plus, I mean...they all hang out together, some of them wearing also clothing patterned with a dominance of their trademark ranger colors and that makes the fact that they are a group even more conspicuous.
Other mistake: In various episodes we see Alpha working in the command centre. When we see him pressing buttons however, they are almost always the same buttons being pressed, regardless of the intent.
Revealing mistake: When one of Rita's monsters tears a building apart, the buildings are completely hollow, and nothing more than 6 pieces of Styrofoam stuck together to look like a building.
Revealing mistake: When we see the Dragonzord, Tommy is sometimes standing on top of it. However, it is obvious that "Tommy" is nothing more than a small plastic figure.
Audio problem: Rita is dubbed over extremely poorly - her words don't match her mouth. This is because Power Rangers is adapted from the Japanese Super Sentai series, and the footage of Rita was from the Japanese series.
Continuity mistake: The clips on the side of the Rangers helmets constantly disappear and reappear.
Plot hole: Up until about Green With Evil, we can see the Rangers fighting Super Putties, which didn't come into the Series until after Green With Evil.
Deliberate mistake: In fight scenes, the Yellow Ranger's stature matches that of a male (and not Trini). This is because in the Japanese version of the show, the Yellow Ranger was played by a man.
Continuity mistake: When in Tank mode and Megazord mode, the order in which the Rangers sit is: Billy, Trini, Jason, Kim, Zach. When switching between Tank mode and Megazord mode, Trini and Kim are switched - they are then back to their original seats once the Megazord has been formed.
Continuity mistake: When the Megazord is in Tank mode, the Mastidon's head section is attached to the center of the Zord. But when the Zord begins to stand up and form the Megazord, the Mastidon head section is gone.
Character mistake: As one of Rita's goons is helping her out of her prison, she complains that he made her step in a puddle right outside of her canister. However, they are on the moon, so there is no way there is a puddle she could have stepped in. (00:01:44)
Continuity mistake: After Rita is freed and blows up her dumpster prison, she taunts the astronauts and says she's going to destroy the nearest planet. She's making a hand gesture as she does and then suddenly between cuts she's in a different position. The goons beside her also are in different stances. (00:01:58)
Continuity mistake: When Bulk and Skull are thrown onto the crash mats, Skull's position changes instantly. Note the edge of the pattern on the mat in relation to his left knee. (00:04:00)
Suggested correction: I do think schools would be evacuated if there is another monster attack, hence they could not notice them not being around, since class does not take place.
There is no confirmation that schools are evacuated. This explanation is only a theory.
And even if they were, it is standard operating procedure during and school evacuation to take attendance to make sure no kids were left behind. Repeated absences from these role calls would raise eyebrows.
Agreed. There are even times when the Rangers are at the Angel Grove Youth Center but are called away but, nobody notices as people leave all of the time.