Definitely around human level because all intelligent animals in Hollywood have human level intelligence and somehow know things that no animal would know no matter how intelligent they were. Things like raptors knowing how to work door handles, and the I-Rex somehow knowing that its pen is monitored with thermal cameras or even knowing what a thermal camera is.
Well Dromaeosaurids (the family that raptors come from) are known to have an extremely high brain to body ratio, second only to Troodontids. However, it's believed that despite the overall size of the brain case, the dromaeosaurid brain wasn't particularly well developed, giving the raptor an approximate intelligence level of an ostrich. Remember, though, that an animal only needs to be as intelligent as it takes to survive, so the intelligence level of an ostrich was genius-level for the time, again only surpassed by the troodontids.
However, the higher intelligence (along with other traits such as general appearance, behavior, and markings) can be somewhat explained away by something that Wu said when talking to Masrani: "Nothing in Jurassic World is natural, we have always filled gaps in the genome with the DNA of other animals. And if the genetic code was pure, many of them would look quite different. But you didn't ask for reality, you asked for more teeth."
Basically, taking the shortcut of using modern DNA from tree frogs, cuttlefish, corvids, iguanas, etc, can explain many of the behaviors and appearances seen in the movies differ from what we now know, a prime example of which was the currently accepted notion that many raptors were probably feathered, a notion that has been borne out in the fossil record.
According to Park Pedia, here's the genetic breakdown of a few of Jurassic World's dinosaurs, most of which were made using the standard method of splicing in DNA from existing species:
The Raptor Squad is primarily Velociraptor DNA, but with a few extras thrown in to fill in gaps:
Blue: Black-Throated Monitor
Charlie: Green Iguana
Delta: unspecified avian DNA
Echo: unpecified
It's also assumed that they have tree frog DNA to help them adjust to a tropical climate.
Rexy is a rather unique specimen. Although there's no information on what was used to fill in the gaps (though whatever it was dulled her sense of sight, as a T-Rex is estimated to have had keener vision than a hawk), she is extremely long-lived compared to estimates on carnivore lifespans. A study of "Sue," the tyrannosaur skeletal remains at the Field Museum in Chicago, estimate that she died at about age 28 or 29 and had reached full adulthood and stopped growing around age 20. She is also amongst the oldest specimens found.
According to Park Pedia, Rexy was born on Isla Sorna (like all of Jurassic Park's initial exhibits) in 1989 or 1990. That would have made her 3 years old at the time of the original incident at Jurassic Park in 1993. One can deduce that Rexy was also subjected to an artificial rapid growth rate like the Indominus, because a three year old Rex would still be considered tiny (the fossilized remains of a 2 year old tyrannosaur is estimated to have weighed about 70 pounds in life) compared to what we saw on the screen, which was a full grown adult. Given the average lifespan after adulthood was probably 5-10 years (based on fossil records), it's quite remarkable that has Rexy has survived and thrived for 22 years, 9-12 of which were spent roaming free (Jurassic World began construction in 2002 and opened in 2005, meaning Rexy was recaptured sometime in that time frame). Not only that, but it's not like she was a frail old lady either. She was still in her prime and fully capable of taking on the Indominus, a hybrid designed solely to be a living weapon. I don't know what they put in Rexy's DNA cocktail, but I'd like some, please.
Now the Indominus is a different story entirely. She was a true hybrid animal, mixing several types of predator DNA to make a living weapon, amongst them Tyrannosaurus, Velociraptor, Carnotaurus, Giganotosaurus, Majungasaurus, Rugops, and Therizinosaurus, as well as modern animals like cuttlefish and an unspecified species of tree frog. Although the rationale for creating her was to renew public interest in Jurassic World, in reality, she was created by Wu for Vic Hoskins and his idiotic dream of using dinosaurs to fight wars. That's why he was so eager to pit the raptors against the Indominus. It wasn't to stop its rampage and take it out (he knew that based on its DNA makeup, anything short of a direct artillery strike would just make it angry). His plan was to pit the two species against one another and test their mettle. Whichever one survived would become his new war toy. He just didn't count on them teaming up against his men.